Four case studies were conducted using home and community observations, interviews with children and parents, and children-created drawings and writing to explore how American-born children in Korean immigrant families construct their identities as readers and writers in out-of-school contexts including home and community. Drawing on James Paul Gee's four identity perspectives---nature, institutional, discursive, and affinity perspectives and conception of primary and secondary D/discourses, I explored how the focal children perceive literacy and experience literacy learning, what texts they report reading and writing, and how their reading and writing practices reflect their literate identities. Korean American children were constantly constructing literate identities while interacting between primary and secondary discourses within their families and communities. Rather than having innate facility with these two languages, Korean and English as things, the children had fully integrated "becoming" biliterate and bilingual into their very existence of "being" Korean.